package com.uniknow.app.util;
public class MD5
{  
/*   * A Java implementation of the RSA Data Security, Inc. MD5 Message   
* Digest Algorithm, as defined in RFC 1321.   
* Based on the JavaScript implementation of Paul Johnston   
**      Copyright (C) Paul Johnston 1999 - 2000.   
**      See http://pajhome.org.uk/site/legal.html for details.   
** Java Version by Thomas Weber (Orange Interactive GmbH)   
**/    
/*   * Convert a 32-bit number to a hex string with ls-byte first   */ 
 String hex_chr = "0123456789abcdef";  
 private String rhex(int num)  
 {    
   String str = "";    
    for(int j = 0; j <= 3; j++)      
     str = str + hex_chr.charAt((num >> (j * 8 + 4)) & 0x0F) + hex_chr.charAt((num >> (j * 8)) & 0x0F);    
     return str;  
  }    
 /*   * Convert a string to a sequence of 16-word blocks, stored as an array.   
  ** Append padding bits and the length, 
  *as described in the MD5 standard.   */  
  private int[] str2blks_MD5(String str)  
  {    
	  int nblk = ((str.length() + 8) >> 6) + 1;    
	  int[] blks = new int[nblk * 16];    int i = 0;    
	  for(i = 0; i < nblk * 16; i++) {      blks[i] = 0;    }    
	  for(i = 0; i < str.length(); i++) 
	  {     
	     blks[i >> 2] |= str.charAt(i) << ((i % 4) * 8);   
	  }   
	   blks[i >> 2] |= 0x80 << ((i % 4) * 8);    
	   blks[nblk * 16 - 2] = str.length()*8;         
	    return blks;
  }   
   /*   * Add integers, wrapping at 2^32   */  
   private int add(int x, int y)  {   
    return ((x&0x7FFFFFFF) + (y&0x7FFFFFFF)) ^ (x&0x80000000) ^ (y&0x80000000);  }    
    /*   * Bitwise rotate a 32-bit number to the left   */  private int rol(int num, int cnt)  
    {    return (num << cnt) | (num >>> (32 - cnt));  }   
     /*   * These functions implement the basic operation for each round of the   * algorithm.   */ 
      private int cmn(int q, int a, int b, int x, int s, int t)  {    
      return add(rol(add(add(a, q), add(x, t)), s), b);  }  
      private int ff(int a, int b, int c, int d, int x, int s, int t) 
       {    return cmn((b & c) | ((~b) & d), a, b, x, s, t);  }  
       private int gg(int a, int b, int c, int d, int x, int s, int t)  {    
       return cmn((b & d) | (c & (~d)), a, b, x, s, t);  }  
       private int hh(int a, int b, int c, int d, int x, int s, int t)  
       {    return cmn(b ^ c ^ d, a, b, x, s, t);  } 
        private int ii(int a, int b, int c, int d, int x, int s, int t)  
        {    return cmn(c ^ (b | (~d)), a, b, x, s, t);  }    
        /*   * Take a string and return the hex representation of its MD5.   */ 
         public String calcMD5(String str)  
         {    
         int[] x = str2blks_MD5(str);    
         int a = 0x67452301;    
         int b = 0xEFCDAB89;    
         int c = 0x98BADCFE;    
         int d = 0x10325476;      
         for(int i = 0; i < x.length; i += 16)    
         {      
         int olda = a;      
         int oldb = b;      
         int oldc = c;      
         int oldd = d;        
         a = ff(a, b, c, d, x[i+ 0], 7 , 0xD76AA478);     
         d = ff(d, a, b, c, x[i+ 1], 12, 0xE8C7B756);     
          c = ff(c, d, a, b, x[i+ 2], 17, 0x242070DB);     
          b = ff(b, c, d, a, x[i+ 3], 22, 0xC1BDCEEE);      
          a = ff(a, b, c, d, x[i+ 4], 7 , 0xF57C0FAF);      
          d = ff(d, a, b, c, x[i+ 5], 12, 0x4787C62A);      
          c = ff(c, d, a, b, x[i+ 6], 17, 0xA8304613);      
          b = ff(b, c, d, a, x[i+ 7], 22, 0xFD469501);      
          a = ff(a, b, c, d, x[i+ 8], 7 , 0x698098D8);      
          d = ff(d, a, b, c, x[i+ 9], 12, 0x8B44F7AF);      
          c = ff(c, d, a, b, x[i+10], 17, 0xFFFF5BB1);      
          b = ff(b, c, d, a, x[i+11], 22, 0x895CD7BE);      
          a = ff(a, b, c, d, x[i+12], 7 , 0x6B901122);      
          d = ff(d, a, b, c, x[i+13], 12, 0xFD987193);      
          c = ff(c, d, a, b, x[i+14], 17, 0xA679438E);      
          b = ff(b, c, d, a, x[i+15], 22, 0x49B40821);        
          a = gg(a, b, c, d, x[i+ 1], 5 , 0xF61E2562);      
          d = gg(d, a, b, c, x[i+ 6], 9 , 0xC040B340);      
          c = gg(c, d, a, b, x[i+11], 14, 0x265E5A51);      
          b = gg(b, c, d, a, x[i+ 0], 20, 0xE9B6C7AA);      
          a = gg(a, b, c, d, x[i+ 5], 5 , 0xD62F105D);      
          d = gg(d, a, b, c, x[i+10], 9 , 0x02441453);      
          c = gg(c, d, a, b, x[i+15], 14, 0xD8A1E681);      
          b = gg(b, c, d, a, x[i+ 4], 20, 0xE7D3FBC8);      
          a = gg(a, b, c, d, x[i+ 9], 5 , 0x21E1CDE6);      
          d = gg(d, a, b, c, x[i+14], 9 , 0xC33707D6);      
          c = gg(c, d, a, b, x[i+ 3], 14, 0xF4D50D87);      
          b = gg(b, c, d, a, x[i+ 8], 20, 0x455A14ED);      
          a = gg(a, b, c, d, x[i+13], 5 , 0xA9E3E905);      
          d = gg(d, a, b, c, x[i+ 2], 9 , 0xFCEFA3F8);      
          c = gg(c, d, a, b, x[i+ 7], 14, 0x676F02D9);      
          b = gg(b, c, d, a, x[i+12], 20, 0x8D2A4C8A);        
          a = hh(a, b, c, d, x[i+ 5], 4 , 0xFFFA3942);      
          d = hh(d, a, b, c, x[i+ 8], 11, 0x8771F681);      
          c = hh(c, d, a, b, x[i+11], 16, 0x6D9D6122);      
          b = hh(b, c, d, a, x[i+14], 23, 0xFDE5380C);      
          a = hh(a, b, c, d, x[i+ 1], 4 , 0xA4BEEA44);      
          d = hh(d, a, b, c, x[i+ 4], 11, 0x4BDECFA9);      
          c = hh(c, d, a, b, x[i+ 7], 16, 0xF6BB4B60);      
          b = hh(b, c, d, a, x[i+10], 23, 0xBEBFBC70);      
          a = hh(a, b, c, d, x[i+13], 4 , 0x289B7EC6);      
          d = hh(d, a, b, c, x[i+ 0], 11, 0xEAA127FA);      
          c = hh(c, d, a, b, x[i+ 3], 16, 0xD4EF3085);      
          b = hh(b, c, d, a, x[i+ 6], 23, 0x04881D05);      
          a = hh(a, b, c, d, x[i+ 9], 4 , 0xD9D4D039);      
          d = hh(d, a, b, c, x[i+12], 11, 0xE6DB99E5);      
          c = hh(c, d, a, b, x[i+15], 16, 0x1FA27CF8);      
          b = hh(b, c, d, a, x[i+ 2], 23, 0xC4AC5665);        
          a = ii(a, b, c, d, x[i+ 0], 6 , 0xF4292244);      
          d = ii(d, a, b, c, x[i+ 7], 10, 0x432AFF97);      
          c = ii(c, d, a, b, x[i+14], 15, 0xAB9423A7);      
          b = ii(b, c, d, a, x[i+ 5], 21, 0xFC93A039);      
          a = ii(a, b, c, d, x[i+12], 6 , 0x655B59C3);     
          d = ii(d, a, b, c, x[i+ 3], 10, 0x8F0CCC92);      
          c = ii(c, d, a, b, x[i+10], 15, 0xFFEFF47D);     
          b = ii(b, c, d, a, x[i+ 1], 21, 0x85845DD1);      
          a = ii(a, b, c, d, x[i+ 8], 6 , 0x6FA87E4F);      
          d = ii(d, a, b, c, x[i+15], 10, 0xFE2CE6E0);      
          c = ii(c, d, a, b, x[i+ 6], 15, 0xA3014314);      
          b = ii(b, c, d, a, x[i+13], 21, 0x4E0811A1);      
          a = ii(a, b, c, d, x[i+ 4], 6 , 0xF7537E82);      
          d = ii(d, a, b, c, x[i+11], 10, 0xBD3AF235);      
          c = ii(c, d, a, b, x[i+ 2], 15, 0x2AD7D2BB);      
          b = ii(b, c, d, a, x[i+ 9], 21, 0xEB86D391);        
          a = add(a, olda);      
          b = add(b, oldb);      
          c = add(c, oldc);      
          d = add(d, oldd);    
          }    
          return rhex(a) + rhex(b) + rhex(c) + rhex(d);  
          }
         public static String getJiaMi(String in_string)
     	{
     		MD5 md5 = new MD5();
     		String r_str= md5 .calcMD5(in_string);
     		String li_start = r_str.substring(2,6);
     		String li_end = r_str.substring(9,12);
     		r_str =  li_start  + li_end ;
     		r_str = md5.calcMD5(r_str).substring(2,18);
     		return r_str;
     	}
}